Hi,
. Obviously the combination of pitch/thrust required to clear terrain while maintaining a safe minimum airspeed during initial departure will be different compared to the pitch/thrust combo required during high altitude cruise where both high and low speed buffet margins must be respected. Any attempt to find one pitch/thrust combo to use in either scenario would be less than ideal to meet either circumstance at best and potentially disastrous at worst.
This is why AF had two different procedures in force for UAS before the AF447 event
They can be seen in the BEA final report (Eng) page 106